Princess Emille is the princess of Tiberoa, daughter to King Zior and sister to Princess Lisa. When the party first meets her, she doesn't appear to be her normal self. She is, in short, a snob. The party goes to figure out what is going on and discovers that she is in fact not herself. In fact, she has been replaced. The woman parading as Emille placed herself into the princess position to acquire the Moon Dagger.
The party finally revives the real Princess Emille and fight the fake one, causing her to flee. After the party gets to know the real Emille, Albert takes quite a fancy to her, and the two eventually fall in love. After the game ends, they get married.